Control. I understand the point of it but I find it more dangerous than a safety feture. Winter time It'll start to spin and kick out and my natural reaction is to counter steer and then in comes the traction control to throw the vehicle completely off balance. Its actoualy quite scary when i have 2 sleds on the sled deck becuase its very high and the 1200 pounds of snowmobiles makes the center of gravity so much higher. I wish I could disable it permanently. With the car the only reason I could see for having it is not spinning for a launch. But that can be achieved with sticky tires and a properly set up suspension.
